Physics

Problem

In still air where the speed of sound is

v_{\text{sound}} = 343\,\text{m/s}

, two loudspeakers emit continuous tones whose wavelengths are

0.780\,\text{m}

and

0.765\,\text{m}

, respectively. When both speakers operate simultaneously, what beat frequency is detected by a listener positioned equidistant from them? a)

10\,\text{Hz}

5.1\,\text{Hz}

8.6\,\text{Hz}

17.2\,\text{Hz}